Abstract: For a low-cost, high-accuracy tuning of the voltages applied to electrodes in a mass spectrometer, a chromatograph mass spectrometer (1) includes: a medium supplier (11) which supplies a medium as a mobile phase or carrier gas; a passage (15) which introduces, into the mass spectrometer, the medium supplied from the medium supplier; an ionizer (211) which ionizes the medium together with a substance coming from a member forming the passage into the medium; a measurement executer (25, 26, 43) which performs a mass separation and a measurement of a specific ion, using multiple measurement conditions which differ from each other in the value of voltage applied to at least one electrode included in one or more electrodes in the mass spectrometer; and a voltage value determiner (44) which determines the value of voltage applied to each electrode so that the intensity of the ion satisfies a predetermined criterion.

Abstract: A quadrupole mass spectrometer includes a quadrupole mass filter including: a main rod portion including four main rod electrodes; a pre-rod portion including four pre-rod electrodes, where, at an end opposite to the main rod portion, the four pre-rod electrodes are disposed to be aligned on an inscribed circle having the same radius centered on the ion optical axis, and, at the other end facing the main rod portion, two pre-rod electrodes facing each other across the ion optical axis and the other two pre-rod electrodes are disposed to be aligned on an inscribed circle having different radii centered on the ion optical axis; a main voltage applying unit to apply, to each main rod electrodes, a voltage created by superimposing a DC voltage and an RF voltage; and a pre-voltage applying unit to apply an RF voltage having a same frequency as the RF voltage to each pre-rod electrodes.

Abstract: After performing an analysis on a standard sample for a predetermined time, a plurality of ion optical elements such as an ion guide are sequentially selected one by one, and a direct-current voltage having a polarity different from that at the time of analysis is temporarily applied. Meanwhile, intensity data of ions having a specific m/z are continuously collected. After thus collecting the data, the ratio of the ion intensities before and after application of direct-current voltages having different polarities is calculated for each ion optical element, and it is determined whether or not the ratio is equal to or larger than a predetermined threshold value.

Abstract: An information processing apparatus includes a processor configured to: acquire, from results of character recognition performed on a target image including character strings, attribute information indicating an attribute to which a key character string and a value character string belong, the key character string as a character string specified beforehand as a key and the value character string as a character string indicating a value corresponding to the key character string; acquire by using the attribute information the key character string corresponding to the value character string extracted from the results of the character recognition; and output the key character string and the value character string corresponding to the key character string.

Abstract: A single type quadrupole mass spectrometer equipped with an ion source by the ESI method, which is a small device including a vacuum pump having a relatively small evacuation speed. The internal diameter of a desolvation tube for introducing ions from an ionization chamber into a first intermediate vacuum chamber is set to 0.4 mm ?, which is large for a small mass spectrometer. The evacuation speed of a rotary pump is determined so that the product of the cross-sectional opening area of the desolvation tube and the pressure in the first intermediate vacuum chamber falls within a range of 15 to 40 mm2·Pa. This can ensure high detection sensitivity and reduce clogging of the desolvation tube due to droplets. Since the pressure in the first intermediate vacuum chamber does not need to be increased more than necessary, a small rotary pump having a small evacuation speed can be used.

Abstract: An information processing apparatus includes a processor configured to: acquire an image corresponding to a key character string from a target image in response to the key character string that serves as a character string specified beforehand as a key and is acquired from results of character recognition performed on the target image including character strings; extract, by using results of acquiring the image corresponding to the key character string, from the results of the character recognition a value character string that serves as a character string indicating a value corresponding to the key character string; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing device includes: a processor configured to: acquire an invoice to be processed; acquire a document related to the invoice; and perform a process of outputting a suggestion as to a predetermined matter that is to be executed next in accordance with an inconsistency between a content described in the invoice and a content described in the document.

Abstract: An information processing apparatus includes a processor configured to present an account title relating to information obtained from a voucher together with related information relating to the account title.

Abstract: A mass spectrometer adopting a configuration of a multi-stage differential evacuation system appropriately performs optimization of a direct-current voltage applied to a plurality of ion optical elements for transporting ions. An auto-tuning controller acquires intensity data of ions derived from a predetermined component while changing a direct-current voltage applied to ion guides and the like, and searches for a direct-current voltage at which the intensity is maximized. When the direct-current voltage applied to a certain ion optical element is changed at the time of automatic adjustment, the direct-current voltage applied to all the ion optical elements thereafter is also changed by the same amount. Since the direct-current voltage difference between two adjacent ion optical elements always changes at only one point, the direct-current potential difference can be determined so as to optimize the ion passage efficiency.

Abstract: An information processing apparatus includes a processor configured to: acquire, from results of character recognition performed on a target image including character strings, attribute information indicating an attribute to which a key character string and a value character string belong, the key character string as a character string specified beforehand as a key and the value character string as a character string indicating a value corresponding to the key character string; acquire by using the attribute information the key character string corresponding to the value character string extracted from the results of the character recognition; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing apparatus includes a processor configured to: acquire an image corresponding to a key character string from a target image in response to the key character string that serves as a character string specified beforehand as a key and is acquired from results of character recognition performed on the target image including character strings; extract, by using results of acquiring the image corresponding to the key character string, from the results of the character recognition a value character string that serves as a character string indicating a value corresponding to the key character string; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing device includes: a processor configured to: acquire an invoice to be processed; acquire a document related to the invoice; and perform a process of outputting a suggestion as to a predetermined matter that is to be executed next in accordance with an inconsistency between a content described in the invoice and a content described in the document.

Abstract: A quadrupole mass filter includes: four electrodes arranged to surround a central axis and constituting a quadrupole; attachment portions to which a plurality of electrical conductors are attached, at least one of the electrical conductors being arranged at a position that lies in a direction toward an area between each of the adjacent electrodes among the four electrodes, as viewed from the central axis; and a holder having a hollow portion and holding the four electrodes and the plurality of electrical conductors, wherein the electrical conductors are attached to the respective attachment portions and held by the holder with elasticity of a material constituting the electrical conductors.

Abstract: A vacuum chamber 11 for forming a vacuum space has two side walls opposite to each other across an ion beam axis extending within the vacuum space. One of those side walls is openable and closeable. An ion optical element 21 is placed on a base 33, which is located on the bottom surface of the vacuum chamber. A fixation band 213 fixes the ion optical element on the base by holding the element between the base and the fixation band so as to press the element onto the base. A band-catching portion 10d, located on an inside face of a side wall of the vacuum chamber on the opposite side from the openable-and-closeable side wall, catches one end of the fixation band. A band-fixing portion 214, located on the base on the side where the openable-and-closeable side wall is present, fixes the other end of the fixation band to the base.

Abstract: A single type quadrupole mass spectrometer equipped with an ion source by the ESI method, which is a small device including a vacuum pump having a relatively small evacuation speed. The internal diameter of a desolvation tube for introducing ions from an ionization chamber into a first intermediate vacuum chamber is set to 0.4 mm ?, which is large for a small mass spectrometer. The evacuation speed of a rotary pump is determined so that the product of the cross-sectional opening area of the desolvation tube and the pressure in the first intermediate vacuum chamber falls within a range of 15 to 40 mm2·Pa. This can ensure high detection sensitivity and reduce clogging of the desolvation tube due to droplets. Since the pressure in the first intermediate vacuum chamber does not need to be increased more than necessary, a small rotary pump having a small evacuation speed can be used.

Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) has a coating film layer (532) formed by a black nickel plating process on the entire surface of a main member (531) made from phosphor bronze. The coating film layer (532) has high emissivity, and thus heat transferred from the rod holder (51) to the fixation band (53) is efficiently radiated into the vacuum housing (1). Therefore, heat generated in the rod holder (51) due to dielectric loss is efficiently dissipated, and deformation of the rod holder can be reduced.

Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) is made from phosphor bronze having higher thermal conductivity than thermal conductivity of stainless steel or the like. Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53). With this, the heat of the rod holder (51) is efficiently dissipated, and non-uniformity of temperature of the rod holder can be reduced.

Abstract: A mass spectrometer adopting a configuration of a multi-stage differential evacuation system appropriately performs optimization of a direct-current voltage applied to a plurality of ion optical elements for transporting ions. An auto-tuning controller acquires intensity data of ions derived from a predetermined component while changing a direct-current voltage applied to ion guides and the like, and searches for a direct-current voltage at which the intensity is maximized. When the direct-current voltage applied to a certain ion optical element is changed at the time of automatic adjustment, the direct-current voltage applied to all the ion optical elements thereafter is also changed by the same amount. Since the direct-current voltage difference between two adjacent ion optical elements always changes at only one point, the direct-current potential difference can be determined so as to optimize the ion passage efficiency.

Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). A heat release layer (55) made from heat dissipation silicone or the like is inserted between the fixation band (53) and the rod holder (51) and between the fixation band (53) and the holder sustaining stand (52). Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53).

Abstract: An ionizer includes an ionization probe (21) provided with a capillary (211), a metallic slender tube (212), and a nebulizing gas pipe (213). The ionization probe (21) is equipped to perform ESI-based ionization of components in a liquid sample. An electroconductive capillary (22) is disposed at a position forward in a flow direction of a nebulized flow of the liquid sample from the ionization probe (21). A high voltage from a high voltage power supply (23) is applied to the electroconductive capillary (22) to induce corona discharge so that the components in the liquid sample are ionized by the APCI as well. At the time of tuning the ionizer, a standard sample solution is provided through the electroconductive capillary (22), and a high voltage from the high voltage power supply (23) is applied to the electroconductive capillary (22) so that components in the standard sample solution are ionized by the ESI or due to an ion molecular reaction with solvent molecular ions produced in the ionization probe (21).